Toyota Prius c

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MPG: 50

The Prius c is the small "city car" version of the larger Toyota Prius. While its city mileage is better than that of the Prius, its highway mileage is slightly worse, so the cars' combined fuel economy ends up being the same. However, the ACEEE takes into account the environmental impact of manufacturing a vehicle, so lighter vehicles that require less energy to build and transport are rated higher.